diff --git a/gtests/net/packetdrill/tests/bsd/sctp/sctp_forward_tsn.pkt b/gtests/net/packetdrill/tests/bsd/sctp/sctp_forward_tsn.pkt
index 8f5c9a79f028cee7017fd67f658f9a23636843e9..6ec80f8ead284560e4ae8147ce135bfec1877d5a 100644
--- a/gtests/net/packetdrill/tests/bsd/sctp/sctp_forward_tsn.pkt
+++ b/gtests/net/packetdrill/tests/bsd/sctp/sctp_forward_tsn.pkt
@@ -25,15 +25,15 @@
 //             uint32_t ppid, uint32_t flags, uint16_t stream_no, uint32_t timetolive, uint32_t context);
 +0.0 sctp_sendmsg(3, ..., 1000, ..., ..., htonl(1234), 0, 1, 10, 0) = 1000
 +0.0 > sctp: DATA[flgs=BE, len=1016, tsn=1, sid=1, ssn=0, ppid=1234]
-* > sctp: FORWARD_TSN[cum_tsn=1, sids=[1:0]]
+* > sctp: FORWARD_TSN[cum_tsn=1, ids=[{1,0}]]
 +0.1 < sctp: SACK[flgs=0, cum_tsn=1, a_rwnd=1500, gaps=[], dups=[]]
 +0.0 sctp_sendmsg(3, ..., 1000, ..., ..., htonl(1234), 0, 1, 10, 0) = 1000
 +0.0 > sctp: DATA[flgs=BE, len=1016, tsn=2, sid=1, ssn=1, ppid=1234]
-* > sctp: FORWARD_TSN[cum_tsn=2, sids=[1:1]]
+* > sctp: FORWARD_TSN[cum_tsn=2, ids=[{1,1}]]
 +1.0 < sctp: DATA[flgs=BE, len=1016, tsn=1, sid=1, ssn=0, ppid=1234]
 * > sctp: SACK[flgs=0, cum_tsn=1, a_rwnd=..., gaps=[], dups=[]]
 +0.0 read(3, ..., 2000) = 1000
-+2.0 < sctp: FORWARD_TSN[cum_tsn=1, sids=[1:0]]
++2.0 < sctp: FORWARD_TSN[cum_tsn=1, ids=[{1,0}]]
 +0.0 close(3) = 0
 +0.0 > sctp: SHUTDOWN[flgs=0, cum_tsn=1]
 +0.1 < sctp: SHUTDOWN_ACK[flgs=0]